Painted Steel * Full 19  between arms make this commode the easiest to use * Wide base depth provides more stability * Aluminum frame is lightweight and easy to transport * Weight Capacity: 250 Lbs. (on  aluminum)  350 Lb. (on painted) * Height adjusts 17.5  to 21.5  (on  aluminum) 16.5  - 22.5  (on painted) * Clip-on-seat (on painted steel only) * Limited Lifetime Warranty * Width between arms: 19  * Shipping Carton Size: 26  x 25  x 26